Liquid sprayer



June 7, 1938. F. w. LoHsE LIQUID SPRAYER Filed June 22, 193s 12106176024TW by a Lied /fwl/wormg www,

W////// Q\\ w Patented June 7, 1938 UNITED s'rii'rlss LIQUID SPBAYEBFrederlek w. Lome, Attleboro, Mese., einer to T. J. Holmes Company,Inc., a corporation of Massachusetts Application June 22,'

1 Claim.

This invention relates toliquid sprayers of the Y general type used forspraying liquids upon windows, house plants, clothing and for otherpurposes and is intended to provide simple and eiiective means foreconomically performing its Afunctions while also making provisionforconvement and safe transportation when filled, or partly lled, withliquid without danger of leakage of the contents.

With the objects in view the invention comprises a bottle closureremovably attachableto a bottle or other container and provided with amovable plunger piston and a liquidchamber, the closure being providedwith removable sealing means which serves both to prevent leakage of theliquidcontent to the outside and to retain the plunger in a depressedposition to avoid the filling of the outlet conduit which forms ahollowl stem for the piston.

In the accompanying drawing I have illustrated embodiments of theinvention to dierent forms of sprayer devices, in which- Fig'. 1 is avertical sectionillustrating a container provided with my improvement,the sealing cap being removed and the plunger standing in its normalraised position.

Fig. 2 is a central sectiorron a plane at right angles to Fig. 1 showingthe upper part ci `the container with the plungerdepressed by engagementwith the leak-prooi.' sealing cap.

Fig. 3 illustrates a modified form of piston chamber construction inwhich the coiled spring is placed outside of the piston chamber andabove it, instead of inside and beneath the piston. TheV diameters oithe piston stem and its bore are, for the sake of clear illustration,much exaggerated in comparison with actual practice.

In the practice o f my invention according to` the illustration in thedrawing, A indicates a bottle or similar container having' an externallythreaded neck portion for the reception of an internally threadedclosure or cap pl, which is provided with interior washer 2 and anexterior washer 3 around a central opening through which 45 1s insertede'. eentrslneaded thread 4, whose head is externally threaded and whoseinwardly DIO- jeting shank portion is threaded to receive a clamping nuti.

, l 'I'he threaded plug l is providedwith a smooth rcylindrical axialbore 'and in fthis bore 0r PES- sage is sliding'l'y mounted agclse ttinghollow plunger stem 6. .lTofthe top of theplunger stem l6 n is -secureda spraying' block having, in this case, a transversely bored passage forthe reception of a hollow nomle member 8. in which is inserted Norton,Hall.,

193s, semi Ne. sessi- (cl. ce1-ss) an externally threaded plug toassistthe spraying of the liquid but restricting its escape and giving it awhirling motion before it passes out `through the-very small nozzleopeningy I0. The

sprayer block 'I is' also provided with a diametri- 5 cal groove orrecess extending inthe vertical plane of the spray nozzle, so that whenthe nger is pressedfinto this groove the spray points in the directionof the finger.

' To render the sprayer safe for transportation 10 in a trunk orcontainer with other articles, which would be injured by leakage of theliquid, I provide a cup-shaped sealing cap I2 dimensioned'to cover andoverlap the sprayer head 1, the bottom or open end of the cap beingvinternally` threaded 15 to screw upon the threads l* of thel centralmember 4 of the closure cap. While a few drops of liquid may leak out ofthe nozzle under certain conditions, nevertheless it can not escapetothe outside because the sealing cap, when screwed -down tightly againstthe washer I, forms a positive and reliable seal wholly preventing anypossible escape oi' the liquid,either through the nozzle or through thejoint between the central plug 4 and the closure.

-A cylindrical piston I3 is secured to the lower end of the plunger stem8 and, as shown, is provided with an internal vvalve chamber in which ismounted a check valve II in the form` of a ball closing the centralpassage in the lower end oi the piston when the piston moves to the topof the surrounding piston chamber I8 after the liquid has been expelledby the downward stroke. The object of the Ovalve is to prevent weakeningthe partial vacuum in the piston chamber l'created by the upward strokeof the pump and means is providedto prevent the check valve member I5from closing the liquid outlet passage formed through the stem` 6 in anysuitable manner, as by means oi.' an in-turned lip Il at the lower endof the piston stem.

It will-be observed that the piston or pump chamber is closed at thebottom and is surrounded by an elongated shell annularly spaced'irom theoutside of thepiston chamber. The piston y chamber is also provided withinlet holes I8* immediately below the levell of the bottom of the pistonwhen the piston is in raised position'. A helical spring I8 is seatedupon the closed bottom ofI the'pump chamber and exerts an upwardpressure or thrust against the bottom of the piston.l The outer shell I1has itsI upper portion contracted to t snugly, around the open or upperend of the piston chamber I6 and has its upper portion iii-turned tovform -an annular flange I1", which closelynts around the piston stem andserves as a stop for the upward stroke of the piston.

When the piston is depressed by pressure of the ngers upon the sprayblock 1 after its bottom 'has passed below the level of the liquid inletopening I6, the only escape -for the liquid .1S through the hollowpiston stem to the sprayer head, as it will be seen that the pistonitself acts as a valve preventing the escape of liquid through thepassages IS during the remainder of the down stroke after it has passedbelowV said passages. Upon the release of pressure on the spray head thepiston is rapidly returned to its uppermost position creating apartialvacuum,so that s the liquid in the bottle, so long as the lowerend .a suction for the purpose of supplying theplston chamber with moreliquid.-

In Fig. 3 is shown a pump chamber in which thevpiston I3 does not act asa valve and a check valve 20 is provided at the bottom inlet passageresting upon a centrally bored seat member' 2|,v

the bottom of the piston chamber being provided with a Valve-controlledinlet opening; The

object of extending the exterior skirt or shell` .I 1 down almost to thebottom of the pump chamber, to which it is secured, is to permit theremoval of liquid until the bottle is practically emptied. l

While thel return spring is shown in Fig. 1 as inserted in-the pistonchamber itself, in the form shown in Fig. 3 I have shown the returnspring 22 surrounding the piston stem and interposed between the top ofthe piston chamber andv a stop member 23 secured to the piston stem 8 ata suitable distance above the piston I3 to permit the piston to have itsfull stroke downward and upward.

'I'he closure parts are shown in the drawing as composed of rubber orbakelite,'so that the device may be used for liquids which are likely toattack metal, but obviously they may be made of any suitable material.v

What I claim is:

In a spraying device for liquids, a bottle having a threaded neck, areciprocating pump mounted withinthe bottle, a hollow pump rod connectedto the pump for reciprocation thereof and extending outwardly throughthe bottle neck, a cap for the bottle having a flat upper face and athreaded bore in which the bottle neck. is re"- ceived, an enlargedwasher applied to the upper face of the cap, a washer appliedv to thebottom of the `cap bore and' engaging the endv of the bottle neck, ahollow plug for supporting the pump rod, said plug having an enlargedexternally threaded head of less diameter than the washers seated`against the upper washer, and a A

